Color stability of denture resins after staining and exposure to cleansing agents

The Effect of a Continuous Mechanical Polishing Protocol on Surface Roughness, Biofilm Adhesion, and Color Stability of Acrylic Resin Artificial Teeth

“…Polymer solubility may be affected by alimentary and hygiene solutions depending on pH, polarity of liquids, time of contact with materials, and the presence of specific pigments, These aqueous solutions act through the process of absorption, causing a plasticizing effect on the surface, forming micro‐cracks, thus leading to structural degradation over time . Furthermore, denture brushes and toothpastes have the potential to damage the material surface by means of attrition and abrasion generated during brushing, thereby, increasing the roughness of the surfaces, regardless of the quality of polishing and initial smoothness …”

“…However, acrylic resin's low abrasion resistance and color stability may lead to an occlusal imbalance and esthetic problems . Daily brushing, chewing, the use of hygiene solutions and the consumption of common drinks such as coffee, tea, soda, wine, and juices, can degrade the acrylic resin, damaging important properties such as color and surface roughness, subsequently reducing the lifespan of the prosthesis both esthetically and functionally, as well as decreasing the hygiene effectiveness of its users.…”

Farkli İçeceklerde Bekleti̇len Yumuşak Astar Materyalleri̇ni̇n Renk Stabi̇li̇tesi̇ni̇n i̇n Vi̇tro Olarak Değerlendi̇ri̇lmesi̇

“…Yumuşak astar maddelerinde herhangi bir renklendirici solüs-yona maruz bırakılmadan gözlenen renk değişikliği yumuşak astar materyalinin kimyasal yapısındaki değişik-likleri gösteren bir belirtidir 1,15 Akrilik ve silikon esaslı yumuşak astar materyalleri renk değişimi açısından karşılaştırıldığında, silikon esaslı yumuşak astar maddelerinin daha iyi renk stabilitesi gösterdiği saptanmıştır. Otopolimerize ve ısı ile polimerize olan yumuşak astar materyalleri renk stabilitesi açısından karşılaştırıldıklarında sıklıkla ısı ile polimerize olan yumuşak astar materyalleri daha stabil bulunmuştur 18,19 . Bizim çalışmamızda da ısı ile polimerize olan silikon esaslı yumuşak astar maddesi olan ufigel P otopolimerize, akrilik esaslı yumuşak astar maddesi olan viskojelden daha iyi renk stabilitesi göstermiştir.…”

Evaluation of a Realistic Cleansing Protocol for Preventing Discoloration of Denture Resins

“…Studies investigating the effect of cleansers on the color stability of denture resins have used a variety of protocols . They differ not only in the cleanser used but also in the immersion time and/or the duration of the whole experiment as well.…”

“…[24][25][26][27][28][29][30] Studies investigating the effect of cleansers on the color stability of denture resins have used a variety of protocols. 25,27,28,[30][31][32][33][34][35][36] They differ not only in the cleanser used but also in the immersion time and/or the duration of the whole experiment as well. 1, 3, 7, 30, 60, 90, or 180 days were the common time intervals at which resins were measured for changes in color, as a cumulative effect of the cleanser, where they were immersed continuously.…”